Pass the data back from the jsp page to the java code

Question

Hi,
I have written an iView that receives an event using EPCF and extracts data from the client data bag.
I need this iView to pass the data back from the jsp page to the java code.
I am trying to do this using a hidden input field, but I cannot get the code to work.
Here is the code on the jsp page.
<%@ taglib uri="tagLib" prefix="hbj" %>
<hbj:content id="myContext" >
  <hbj:page title="PageTitle">
   <hbj:form id="myFormId">
<hbj:inputField id="myInputField" type="string" maxlength="100" value="" jsObjectNeeded="true">
<% myInputField.setVisible(false);%>
</hbj:inputField>      
   </hbj:form>
  </hbj:page>
</hbj:content>
<script language=JavaScript>
EPCM.subscribeEvent("urn:com.peter", "namedata", window, "eventReceiver");
function eventReceiver(eventObj) {
     var url = eventObj.dataObject;
     var funcName = htmlb_formid+"_getHtmlbElementId";
     func = window[funcName];
     var ipField = eval(func("myInputField"));
     ipField.setValue(url);
     var form = document.all(htmlb_formid);
     form.submit();
</script> 
Here is my java code
package com.sap.training.portal;
import com.sapportals.htmlb.InputField;
import com.sapportals.htmlb.page.DynPage;
import com.sapportals.htmlb.page.PageException;
import com.sapportals.portal.htmlb.page.JSPDynPage;
import com.sapportals.portal.htmlb.page.PageProcessorComponent;
public class ListSalesOrder extends PageProcessorComponent {
  public DynPage getPage(){
    return new ListSalesOrderDynPage();
  public static class ListSalesOrderDynPage extends JSPDynPage{
     private String merong;
    public void doInitialization(){
    public void doProcessAfterInput() throws PageException {
          InputField reportfld = (InputField) getComponentByName("myInputField");
          if (reportfld != null)      merong = reportfld.getValueAsDataType().toString();
    public void doProcessBeforeOutput() throws PageException {
          if ( merong != null ) setJspName("merong.jsp");
          else setJspName("ListSalesOrder.jsp");
Here is DD
<?xml version="1.0" encoding="utf-8"?>
<application>
  <application-config>
    <property name="SharingReference" value="com.sap.portal.htmlb"/>
    <property name="PrivateSharingReference" value="com.sap.portal.htmlb"/>
  </application-config>
  <components>
    <component name="SearchSalesOrder">
      <component-config>
        <property name="ComponentType" value="jspnative"/>
        <property name="JSP" value="/pagelet/SearchSalesOrder.jsp"/>
      </component-config>
      <component-profile>
        <property name="tagLib" value="/SERVICE/htmlb/taglib/htmlb.tld"/>
      </component-profile>
    </component>
    <component name="ListSalesOrder">
      <component-config>
        <property name="ClassName" value="com.sap.training.portal.ListSalesOrder"/>
      </component-config>
      <component-profile>
        <property name="tagLib" value="/SERVICE/htmlb/taglib/htmlb.tld"/>
      </component-profile>
    </component>
  </components>
  <services/>
</application>
After receive event, then call java script function "eventReceiver" and call "form.submit()".
But .. PAI Logic in Java code doesn't called ...
Where is my problme ?
Help me ...
Regards, Arnold.

Answer 1

Hi Arnold,
you should not do a form.submit yourself. Instead you can put a component called ExternalSubmit to your page:
ExternalSubmit exSubmit = new ExternalSubmit("EX_SUBMIT"));
exSubmit.setServerEventName("MyEvent");
This results in a java script funtion on the page which is called "_htmlb_external_submit_". If you call this function the the form gets submitted and your event handler is called.
regards,
Martin